Wireless remote automatic odor sampling monitoring system and cascade sampling method thereof

Abstract

The invention discloses a wireless remote automatic odor sampling monitoring system and a cascade sampling method thereof. The cascade sampling method comprises the steps: a monitoring center sends a sampling control command and an environment odor concentration measurement control command to sampling front-end equipment; the sampling front-end equipment receives the sampling control command and the environment odor concentration measurement control command, collects a gas sample, and measures the gas sample; the sampling front-end equipment measures the fetor concentration of the gas, and transmits the fetor concentration of the gas to a monitoring center through the Internet; the monitoring center receives the fetor concentration of the gas and manages and stores data; when the fetor concentration of the gas is more than or equal to a first threshold and less than a second threshold, a low-concentration sampler is adopted for collecting the gas sample; when the fetor concentration of the gas is more than or equal to the second threshold and less than a third threshold, a medium-concentration sampler is adopted for collecting the gas sample; when the fetor concentration of the gas is more than or equal to the third threshold, a high-concentration sampler is adopted for collecting the gas sample. The invention realizes real-time monitoring of the fetor concentration in a monitoring region.

Description

technical field [0001] The invention relates to a method for classifying and collecting malodorous gas samples in the intensity and concentration test of malodorous or peculiar smell gas, and intelligently classifying and sampling the concentration of malodorous gas, in particular to a wireless remote odor automatic sampling monitoring system and its Stratified sampling method. Background technique [0002] Odor pollution belongs to air pollution. Odor is defined as the general term for all unpleasant odors, including odor and fragrance. Odor and fragrance can be transformed into each other due to changes in concentration. There are about 4,500 kinds of odorous gases currently known. One substance or several substances cannot replace the measurement of odor concentration, because it is the most direct indicator of people's sense of smell. The relevant national standards are different from the relevant requirements for air pollution sampling. [0003] At present, there is H...

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Problems solved by technology

[0005] At present, most gas sampling systems do not have real-time gas analysis and monitoring functions, and cannot detect and record the concentration of main pollutant gas components or comprehensive odor indicators in the monitored area in real time, or have online detection and analysis functions but cannot perform Online sample collection function, online detection and analysis are mostly used for supervision, and there is still no legal basis for arbitration; although some online sample collection can be carried out, the maximum pollution data is collected according to the relevant emission standards of environmental odor, and the general online gas sampling system exceeds the standard The maximum pollution value cannot be collected when the value is set, and the on-site pollution situation cannot be truly reflected, and the complaint situation cannot be reflected

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